Display screen or portion thereof with a graphical user interface



FIG. 1 is a front view of a first embodiment of the display screen orportion thereof with a graphical user interface;

FIG. 2 is a front view of a second embodiment of the display screen orportion thereof with a graphical user interface;

FIG. 3 is a front view of a third embodiment of the display screen orportion thereof with a graphical user interface;

FIG. 4 is a front view of a fourth embodiment of the display screen orportion thereof with a graphical user interface;

FIG. 5 is a front view of a fifth embodiment of the display screen orportion thereof with a graphical user interface; and,

FIG. 6 is a front view of a sixth embodiment of the display screen orportion thereof with a graphical user interface.

The outermost broken line perimeter illustrates the display screen orportion thereof and the broken lines within the outermost perimeterillustrates portions of the graphical user interface. All subject mattershown in broken lines in the drawings, including the matter depicted inheavy broken lines in the upper right corner, illustrate portions of thearticle and forms no part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof witha graphical user interface, as shown and described.